History

When Mockingbird showed Fury of Madame Hydra (Skrull)'s body in secret, this led to his intention to leave S.H.I.E.L.D. and form his own team to search and root out every Skrull agent hidden in every organization and subgroups. He brought Quake and Black Widow into his team, but they didn't know that Mockingbird was replaced by Veranke posing as her.